Advanced tunability of optical properties of CdS/ZnSe/ZnTe/CdSe multi-shell quantum dot by the band edge engineering

In this study, the advanced manipulability of wave functions in a type-II multi-shell hetero-nanostructure (MS-HNS) and the tunability of radiative exciton lifetime over a wide range with and/or without changing in transition energies has been demonstrated by the band edge engineering. For this purpose, the electronic and optical properties of exciton (X) and biexciton (XX) in a spherical CdS/ZnSe/ZnTe/CdSe HNS have been explored in detail. In the calculations, effects of all Coulombic interactions between the charges have been taken into account on the wave functions. Moreover, in the case of XX, the exchange-correlation potential between the same charged particles has also been considered. The results have been presented as a function of CdS core radius and ZnSe shell thickness and the probable physical reasons have been discussed in detail

The Mediator Role of Employee Voice in the Effect of Agile Leadership on Teachers’ Affective Occupational Commitment

The research aims to reveal the effect of teachers’ agile leadership perceptions on their affective occupational commitment and how employee voice plays a mediating role in this effect. The study group of the research consists of 354 teachers working in Istanbul in 2021. The research is carried out according to the relational survey model. Correlation analysis is carried out and tested using the suggested mediation model based on the relationship between the variables to determine the relationship between variables. According to the research findings, the agile leadership characteristics of school principals positively affect their affective occupational commitment. Additionally, mediation analysis showed that employee voice is a partial mediator between agile leadership characteristics and affective occupational commitment. This research contributes to the theory by revealing the important effects of the agile leader in the school. In the light of the findings, the implications of the agile leader, employee voice, and occupational commitment of teachers were discussed, and suggestions were made for future research

Switching Costs in Accounting Services

Switching cost is defined as possible costs that customers may encounter when they want to change the firm they buy service, and an important subject in terms of accounting services. Particularly, small business entrepreneurs’ not having knowledge about accounting procedures, and sharing private information with accounting firms make switching costs more important for accounting services. Thus, the aim of this study is to investigate the concept of switching costs (relational cost, procedural cost and financial cost), its determinants (perceived service quality, service importance, and service failures), and consequences (re-purchasing, and recommen ding to others). Theresearch was conducted on small business entrepreneurs in down-town of Balıkesir in Turkey. Total 405 small business entrepreneur owners were interviewed. According to results of the study, perceived service quality positively affects all dimensions of switching costs, significance of service positively affects procedural and relational costs, and service failures negatively affect procedural and relational costs. The results showed that while procedural and relational costs positively affect re-purchasing and recommending to others variables, financial cost did not have any effect on these variables

Kısa kamp döneminde uygulanan yoğun antrenmanların yıldız erkek basketbolcuların biyomotorik ve teknik performansları üzerine etkileri

Purpose of the camp period, men's basketball stars applied to the intensive training is to investigate the effects of the biomotoric and technical performance.Materials and Methods; Yenimahalle City Sports Club, played basketball in our study who joined 15 male basketball players. The mean age of 13.9±0.5 years, basketball, body weight 70.4±8.2 kg., Height 184.1±7.8 cm. 3.0±1.1 years in age and fitness were olaerak. Biyomotorik tests in basketball, 20 m., 30 m. speed, vertical jump squat, vertical jump on one foot right-left, right and left hand grip, back strength, flexibility, endurance, 3000 m. was applied. As technical testing, basic stance, changing hands from the front, rear changing hands, legs, between the left-right turns against time was performed in reverse. Period of 12 days at the camp was planned. Ten (10) days training and daily double training as planned. In the period since the end of the camp and the tester was applied. The data obtained from the arithmetic mean and standard deviation values were determined using paired t-test was applied.Findings, physical measurements of body weight, a significant decrease (p>0.05) was seen, biomotoric features 30 m sprint, shuttle, left aAyak vertical jump, flexibility, endurance and technical tests for a significant improvement was observed (p<0.05)The result we obtained based on the data at the level of the stars of the camp period of intensive training and technical performance biyomotorik were found to positively influence a large part of.Amaç; kısa kamp dönemi yıldız erkek basketbolculara uygulanan yoğun antrenmanların biyomotorik ve teknik performansları üzerine etkilerinin araştırılmasıdır. Materyal ve Metot; çalışmamıza Yenimahalle Belediye Spor Kulübünde basketbol oynayan 15 erkek basketbolcu katıldı. Basketbolcuların ortalama yaşları 13.9±0.5 yıl, vücut ağırlıkları 70.4±8.2 kg., boyları 184.1±7.8 cm. ve spor yaşları da 3.0±1.1 yıl olarak belirlendi. Basketbolculara biyomotorik testlerden, 20 m., 30 m. sürat, squat dikey sıçrama, sağ-sol tek ayak dikey sıçrama, sağ-sol el kavrama kuvveti, sırt kuvveti, esneklik, 3000 m. dayanıklılık testleri uygulandı. Teknik test olarak da, temel duruş, önden el değiştirme, arkadan el değiştirme, bacak arası, reverse sağ-sol turnike zamana karşı (BASTEK programında) uygulandı. Kısa kamp dönemi 12 gün üzerinden planlandı. Antrenmanlar on (10) gün ve günde çift antrenman olarak planlandı. Kamp dönemi başlangıcı ve bitişinde testler uygulandı. Elde edilen verilerin aritmetik ortalama ve standart sapma değerleri belirlenerek paired t-test uygulandı. Bulgular; Fiziksel ölçüm değerlerinden, vücut ağırlığında anlamlı bir düşüş olduğu (p>0,05) görülürken, biyomotorik özelliklerden 30 m sürat, mekik, sol ayak dikey sıçrama, esneklik, 3000 m. dayanıklılık ve teknik test değerlerinde anlamlı bir gelişme olduğu görüldü (p<0,05). Sonuç; Elde ettiğimiz verilere dayanarak, yıldız basketbolcular seviyesinde kısa kamp dönemi yoğun antrenmanların biyomotorik ve teknik performanslarının büyük bir kısmını olumlu etkilediği görüldü. Ayrıca uygulanan antrenman programının amaca yönelik etkin bir program olduğu da söylenebilir

Serum uric acid level independently predicted metabolic syndrome in non-diabetic hypertensive patients

Background: Arterial hypertension may accompany metabolic syndrome (MetS) which is strongly associated with cardiovascular diseases. Determining high-risk groups concerning MetS development is crucial to prevent this undesirable clinic. Serum uric acid level was demonstrated to be associated with development of hypertension and MetS in normal population. It was aimed to investigate the role of serum uric acid for the prediction of MetS in non-diabetic hypertensive individuals. Material and methods: Patients who were diagnosed with arterial hypertension between January 2021 and June 2021 were included in the study. Diabetes mellitus was determined as an exclusion criteria. Metabolic syndrome was considered as the clustering of high blood pressure, elevated glucose level, abnormal cholesterol levels, and abdominal obesity conditions according to the National Cholesterol Education Program (NCEP) definition. Patients were divided into two groups by the presence of MetS. Results: The mean age of 107 non-diabetic hypertensive patients was 48.5 ± 8.6 years and 50 (46.7%) of them were female. A total of 56 patients (52%) had MetS. Waist circumference (101.2 ± 11.3 vs. 106.7 ± 10.1 cm, p = 0.020), body mass index (30.6 ± 4.9 vs. 32.8 ± 4.1, p = 0.016), E/e’ ratio [9.2 (7.3–11.1) vs. 10.6 (9.1–13.4), p = 0.003], EAT [5.9 (4.8–8) vs. 7.9 (6–9.6), p = 0.006], and serum uric acid level (4.75 ± 1.10 vs. 5.82 ± 1.21 mg/dL, p < 0.001) were higher in MetS (+) group. Multivariable regression demonstrated that serum uric acid [(odds ratio) OR = 2.217, 95% confidence interval (CI): 1.300–3.783, p = 0.003] and body mass index (OR = 1.214, 95% CI: 1.032–1.428, p = 0.019) were independent predictors of MetS presence. Conclusion: Serum uric acid level predicted MetS presence in non-diabetic hypertensive individuals independently. This practical blood parameter can be used to evaluate those who are at risk of MetS development.

Recent Advances in Health Biotechnology During Pandemic

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which emerged in 2019, cut the epoch that will make profound fluctuates in the history of the world in social, economic, and scientific fields. Urgent needs in public health have brought with them innovative approaches, including diagnosis, prevention, and treatment. To exceed the coronavirus disease 2019 (COVID-19) pandemic, various scientific authorities in the world have procreated advances in real time polymerase chain reaction (RT-PCR) based diagnostic tests, rapid diagnostic kits, the development of vaccines for immunization, and the purposing pharmaceuticals for treatment. Diagnosis, treatment, and immunization approaches put for- ward by scientific communities are cross-fed from the accrued knowledge of multidisciplinary sciences in health biotechnology. So much so that the pandemic, urgently prioritized in the world, is not only viral infections but also has been the pulsion in the development of novel approaches in many fields such as diagnosis, treatment, translational medicine, virology, mi- crobiology, immunology, functional nano- and bio-materials, bioinformatics, molecular biol- ogy, genetics, tissue engineering, biomedical devices, and artificial intelligence technologies. In this review, the effects of the COVID-19 pandemic on the development of various scientific areas of health biotechnology are discussed

Arşivcilikte Genel Tasnif Sistemi ve Bileşenleri

In archival science, it is crucial to save and transfer the documents to the next generations and emerging organizations, as well as to organize the document stacks to the use of administrations and of researchers. Without doubt, making effi cient use of nonclassified document stacks and especially getting the needed documents from them are quite difficult, even impossible. For this reason, classification type of studies to be carried out in the archives is decisive for rendering efficient archival services. In the present study, by taking the type and amount of archival documents into account, a general classification system has been devised. Main purposes of the system and its practical applications were tried to be explained. The explanations were supported with examples from Turkey, which actually has a rich archive potential,in terms of realization of the mentioned type of classifi cation processes within the framework of standard applications

Obez ve metabolik sendromlu hastaların yeni ekokardiyografi parametreleri ile değerlendirilmesi

Metabolik sendrom kriteri taşıyan obezler ile metabolik sendrom kriteri taşımayanobezlerde, sol ventrikül sistolik ve diyastolik fonksiyonlarını konvansiyonel metodlar ve yeniekokardiyografik parametreleri kullanarak değerlendirmeyi amaçladık.Materyal-Metod: Hastalar metabolik sendrom tanısı alan obezler (grup 1), metaboliksendrom tanısı almamış obezler (grup 2) ve kontrol grubu olmak üzere 3 gruba ayrıldı.Metabolik sendrom tanısı almış 20 obez hasta, metabolik sendrom kriteri taşımayan 20 obez,kontrol grubu olarak 19 sağlıklı birey alındı. Beden kütle indeksi >30 kg/m² olanlar obezolarak kabul edildi. Metabolik sendrom tanısı için NCEP-2001 ATP III MS tanı kriterlerikullanıldı. Metabolik sendrom kriterlerinden en az 3 tanesine sahip, BK >30 kg/m² olanhastalar obez-metabolik sendrom grubuna dahil edildi. Kontrol gurubu için tamamen sağlıklıolan gönüllülerden BK 30 kg/m² accepted as obese. NCEP-2001ATP III MS criterias were used for diagnosis of metabolic syndrome. BMI >30 kg/m² patientswith 3 criterias metabolic syndrome were added to metabolic syndrome group. Control groupwas formed with normal patients with BMI <30 kg/m². Left ventricul diameters, mass,diastolic functions and myocard performance index of patients and control group wereobtained with conventional ecocardiography and tissue doppler methods. One way Annovatest and univariate coveriance analyses were performed. p value <0.05 was consideredsignificant.Results: There was no statistically significant difference in age and gender between 3 groups.BMI and waist circumference were similar in group 1 and group 2 but significantly higherthan group 3. Systolic and diastolic blood pressures were significantly higher in group 1 thanother 2 groups and were similar between group 2 and group 3. When the conventionalecocardiographic parameters were compared; there were no difference between 3 groups inleft ventricul diameters. Septum thickness was lower in control group than other 2 groups.Left ventricul mass was higher in group 1 and group 2 than control group and was similarbetween in group 1 and group 2 (137.09±32.61 gr, 142.73±29.85 gr and 129.72±32.60 gr,p<0.05, respectively). Comprasion of diastolic parameters; E/A ratio was significantly lowerin group 1 than other 2 groups. E/A ratio was lower in group 2 than control group (0.78±0.15,1.04±0.32 and 1.38±0.44, p<0.05, respectively). EDZ was similar in group 1 and group 2 andsignificantly higher than control group (195.5±47.5 msn, 194.8±42.1 msn and 158.9±35.6msn, p<0.05, respectively). Comprasion of Tissue Doppler parameters; mean Em/Am waslower in group 1 than other 2 groups. Mean Em/Am was significantly lower in group 2 thancontrol group (0.72±0.16, 0.98±0.40 and 1.24±0.37, p=0.06, respectively). There were nostatistically significant difference in E/mean Em and Ps/Pd between 3 groups. Whencompared with Left Ventricul MPI; MPI was significantly higher in group 1 and group 2 than39control group. Mean MPI with tissue Doppler wall was similar in group 1 and group 2 andsignificantly higher than control group (0.58±0.07, 0.62±0.12 and 0.49±0.06, p<0.05,respectively). MPI with conventional methods was similar in group 1 and group 2 andsignificantly higher than control group (0.54±0.14, 0.55±0.18 and 0.37±0.12, p<0.05,respectively).Conclusions: Obesity can damage left ventricul functions without the other importantcriterias of metabolic sydrome. Doppler ecocardiography is a widespread method to evaluatethe potential risks of these patients. Tissue Doppler ecocardiography is a good alternative ofconventional ecocardiography and less affected from physiological conditions in obespatients

Investigation of pore structure in different cooling conditionas and diffrent cement types for mortar applied high temperature

Bu çalışmada, Türkiye'nin genelinde yaygın olarak kullanılan 8 farklı çimento kullanılarak üretilen harç çubuklarının yüksek sıcaklık, farklı zaman dilimlerinde ve farklı soğutma koşulları altında mekanik dayanımları ve boşluk miktarı tespit edilmeye çalışılmıştır. Deneysel çalışmada TS EN 196-1 göre harç numuneleri üretilmiştir. Harç numuneleri 28 ve 90. gün olmak üzere iki farklı zaman diliminde ve ik farklı küre(hava soğutma ve su soğutma) tabi tutulmuştur. Gün koşulunu sağlayan harç numunelerine 20 ºC,150 ºC, 300 ºC, 500 ºC ve 700 ºC yüksek sıcaklık. Laboratuar sıcaklığına kadar soğutulan numunelerin ultrases geçiş hızı, özgül ağırlık, eğilmede-çekme dayanımı, basınç dayanımı ve boşluk miktarlarına bakılmıştır. Deney sonuçları dört faktörlü varyans analizine göre incelenmiş ve yüksek sıcaklığın harç numuneleri üzerindeki etkisi belirlenmiştir. Sonuçda, ultrase geçiş hızı, eğilmede çekme-çekme ve basınç dayanımının numunelerin genelinde sıcaklık fakötünde 150 ºC'ye kadar artış gösterdiği ve daha sonra düştüğü görülmüştür. Soğutma koşulları karşılaştırıldığında su ile soğutmada dayanımın daha fazla düştüğü tespit edilmiştir. Gün faktörü karşılaştırdığında fark olduğu tespit edilmiştir. Çimento çeşitlerine göre incelendiğinde çimentolar arasında farklılık olduğu tespit edilmiştir. Boşluk yapısına bakıldığında ise çimento türleri ve soğutma koşuluları arasında farklılık gözlemlenmiş, sıcaklık arttıkça boşluk oranın arttığı tespit edilmiştir.In this studty, this thesis is based on mechanical resistance of Cement mortar bars made of 8 different Cements from many parts of Turkey and behaviours of Cement mortar bars, their strength and pore structures were measured in high temprature and cooling process. In the experimental study, standard Rilem sand was used to produce mortar specimens according to TS EN 196-1. These mortar specimens were exposed to two different types of experimental tests. Some of the mortar specimens suitable for experimental sample were saved at room temprature (20 ºC) and the others were placed at 100 ºC in an oven. Later, the specimens taken from the oven were put another oven to expose to the temparatures changing from 150-300-500 and 700 ºC each mortar was applied to 180 ºC for 1 minute. cooling process was applied in two ways; cooling the mortar bar in water, and cooling in air. When it was cooled from high temparature to room temprature (20 ºC), ultrasonic rate, specific gravity, flexural strength, compressive strength, and pore structures were measured in these specimens the test results were examined as 4 factor analysis types and high temprature effects on the mortar specimens was determined. As a result of these measurements, as temperature increases up to 150 ºC, it can be said that ultrasound pulse velocity, the flexural and compressive strengh of the samples usually increase. As temperature increases over 150 ºC; ultrasound pulse velocity, the flexural and compressive strengh of the samples usually decrease. When comparing cooling process to each other, when cooled by water, the strengh of of the samples decreases more than cooled by air. Observing that as a function of time, the results are different. When analyzing types of cements, we see big differences among them. When observing the relation between pore structures and types of cements, we see differences between them. As temperature increases, spaces in pore structures increase, too

The reflection of westernization on education from the Tanzimat period to the present

Bu çalışmada Tanzimat Dönemi'nden başlayarak günümüze kadar devam eden Batılılaşma süreci, bu sürecin eğitim dünyasına yansıması, süreçteki dönemsel değişimler, eğitimde Batılılaşma tartışmaları, Batılılaşmanın etkisi ve sonuçları üzerinde durulmuştur. Çalışmada amaçlananlar: Osmanlı Devleti'nin son dönemlerinden başlayarak Cumhuriyet'in ilk yılları ve günümüze kadar uzanan Batılılaşmaya bağlı olarak eğitim sisteminin geçirdiği değişimleri anlayabilmek, Batılılaşma sürecinin kültürel kimlik üzerindeki etkilerini değerlendirmek, eğitim sisteminin hangi değerlere göre şekillendirilmesi gerektiği yönündeki tartışmalara katkı sağlamak, Batılılaşma sürecinin eğitim sisteminde yol açtığı sorunlara çözüm yolları geliştirmek hedeflenmiştir. Çalışmada nitel araştırma yöntemi kullanılarak literatür taraması yapılmıştır. Kronolojik olarak Tanzimat Dönemi'nden günümüze kadar uzanan Batılılaşmaya bağlı olarak eğitim sisteminin geçirdiği değişimler ele alınmıştır. Ayrıca bu dönemlerdeki eğitimcilerin ve eğitim önderlerinin fikir ve düşüncelerine değinilmiştir. Araştırmanın sonucunda eğitim önderlerinin fikir ve düşüncelerinden hareket edilerek, Batı toplumlarına ait yaşam felsefesi ve paradigmaların eğitim sistemine alınmasıyla toplumda kültürel kimlik sorunu ve bozulmaların ortaya çıktığı görülmüştür. Bu sorunun çözümü ise kendi kimliğinden ve değer sisteminden, kendi köklerinden vücut bulan bir eğitim sisteminin inşa edilmesinde bulunmuştur.In this study, the Westernization process starting from the Tanzimat Period and continuing until today, the reflection of this process on the world of education, periodical changes in the process, Westernization debates in education, the effects and results of Westernization are emphasized. The study aims to explain the changes that the education system has undergone due to Westernization starting from the last periods of the Ottoman Empire to the first years of the Republic and until today, to evaluate the effects of the Westernization process on cultural identity, to contribute to the discussions on which values the education system should be shaped accordingly, and to develop solutions to the problems caused by the Westernization process in the education system. In the study, a literature review was conducted using the qualitative research method. Chronologically, the changes that the education system has undergone due to Westernization from the Tanzimat Period to the present day are discussed. In addition, the ideas and thoughts of the educational leaders of these periods were mentioned. As a result of the research, it was seen that cultural identity problems and deterioration emerged in the society with the introduction of the philosophy of life and paradigms of Western societies into the education system, based on the ideas and thoughts of educational leaders. The solution to this problem has been found in the construction of an education system that is rooted in its own identity and value system